Receiver, radio

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OBJECT TYPE: REGENERATIVE/BATTERY/TUBE/TABLE
DATE: 1925
ARTIFACT NUMBER: 2001.0221.001

MANUFACTURER: Canadian General Electric Co. Ltd.
MODEL: 93
LOCATION: Toronto, Ontario, Canada

More Information

General Information

Serial #: 4285 1875
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: WOOD CABINET; METAL, GLASS & SYNTHETIC COMPONENT PARTS & FITTINGS. FABRIC COVERED CABLES.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 21.2 cm
Width: 21.0 cm
Height: 17.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Radio
Sub-Category: N/A

Manufacturer

AKA: General Electric
Country: Canada
State/Province: Ontario
City: Toronto

Context

Country: Canada
State/Province: Unknown
Period: THIS TYPE OF RADIO RECEIVER USED IN EARLY 1920S+
Canada: EARLY REGENERATIVE RADIO RECEIVER MADE IN TORONTO, ON BY CANADIAN GENERAL ELECTRIC CO. LTD. IN 1925.
Function: TO DETECT AND AMPLIFY RADIO SIGNALS.
Technical: REGENERATIVE RADIO RECEIVERS WERE DEVELOPED IN THE EARLY 1920S, AS AN ALTERNATIVE TO CRYSTAL SETS. REGENERATIVE SETS EMPLOYED A VACUUM TUBE TO BOTH DEMODULATE OR DETECT THE RADIO SIGNAL, AND TO PROVIDE AMPLIFICATION. CAREFUL CONTROL OF THE LEVEL OF AMPLIFICATION WAS NECESSARY TO PREVENT OSCILLATION OF THE VACUUM TUBE BUT THE RESULT WAS THAT POWER OUTPUT WAS INSUFFICIENT TO DRIVE A LOUDSPEAKER. (REF. 1)
Area Notes: Unknown

Details

Markings: .1 Decal on cabinet front reads "[CGE logo]/ REGENERATIVE RECEIVER/ PATENTED 1912-1918-1920-1921-1922-1923-1924/ LICENSED ONLY FORAMATEUR EXPERIMENTAL AND/ ENTERTAINMENT USE./ CANADIAN GENERAL ELECTRIC CO. LIMITED/ TORONTO. ONTARIO. CANADA". "CGE/ Model 93" marked on top panel. All controls, etc. including tube receptacles labelled. "4285" and "1875" stamped into underside of radio body. "+90B", "+135B", "GROUND/ -B +A", "-22 1/2C", "+C -A", "- 4 1/2C", and "+45C" stamped into connectors on cables. 1 vacuum tube marked "RVC/ PATENTED/ AS SET FORTH ON CARTON" ontube top; "RADIOTRON/ WX199" incised on tube base. 2 remaining tubes * are identical; both marked "RVC/ RADIOTRON/ WX199" on tube top; "RADIOTRON/ WX 199" incised on base.
Missing: 3 TUBES IN RECEIVER ARE NOT CORRECT MODELS FOR THIS RECEIVER. VISUALLY, RECEIVER & BOX APPEAR COMPLETE. From CA of 12/20/2001 by Matthew Bruce: No - appears complete
Finish: DARK WOOD CABINET. BLACK SYNTHETIC PANEL BEARS GOLDTONE MARKINGS AND BRIGHT BRASS-COLOUR INDICATORS, CONNECTORS, ETC. BLACK MOULDED SYNTHETIC KNOBS. 3 GLASS VACUUM TUBES VISIBLE, ALL WITH SILVER GLASS SLEEVES. CABLES ARE FABRIC COVERED.
Decoration: N/A

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Canadian General Electric Co. Ltd., Receiver, radio, 1925, Artifact no. 2001.0221, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2001.0221.001/

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